Glass cutting device



May 16 195o Filed Jan. '7, 1947 M. A. J. l.. GAULT 2,507,779

GLASS CUTTING DEVICE 4 Sheets-Sheet 1 lzQ/vezfbolb J-J Gau/L@ May 16J/E950 M. A. J. L. GAULT GLASS CUTTING DEVICE 4 Sheets-Sheet 2 Filed Jan. 7, 1947' May 1 6, 1950 M. A. J. L. GAULT 2,507,779

n GLASS CUTTING DEVICE i'ed Jan. '7, 1947 l 4 sheets-sheet s fl' .'3. g y 7 a5 2 4 5 A25 WQ @M7 ww l -2a 29 877V" -sixo|s n 2s y.; L26 \2/7 7Bd A301' l May 16, 1950 M. A. J. l.. GAULT GLASS CUTTING DEVICE 4 Sheets-Sheeil 4 Filed Jan. '7, 1947 Patented May '16, 1950 UNITED STATES .PATENT -OFFICE GLASS CUTTING DEVICE Marcel `Adolphe Joseph Louis Gault,`Pithivers, France, assignor of one-half: to LeonJoseph Villiers, Pithiviers, France Application January 7, 1947,`Serial`No.' 720,512 In France January 7, 1946 the glass and when they attempt cutting with a diamond, are unskilled in regard to the proper Way of using the tool.

Our invention has for its object a glass-cutter that, even when entrusted to unskilled hands, allows the easy achievement of a proper cut.

The glass-cutter forming the object of the invention is distinguished by the fact that it is iixed up in such a way that the cutting tool, that may be either a cutting wheel or a diamond, depending on which is preferred, may be applied to the glass to be cut with a steady pressure adjustable at will, independently of the force exerted by the hand and it includes on the same frame as the cutting tool a kerosene tank of which the content is fed continuously on the surface of the glass close to the operational area of the cutting tool.

Moreover, a set of guide lines may be fixed on the frame on one side or the other of the tool holder to suit the convenience of the operator, thus allowing a speedy delivery of cut glass in the gauges included between standard widths.

The glass-cutter made according to the invention is suited therefore to `give the greatest satisfaction not only to the layman but again to the expert, for the employment by which the invention offers besides a simplied form of execution.

The glass cutter is illustratedas an example in the accompanying drawings wherein:

Figure 1 is a section of the apparatus cut along the line B-B of Figure 3.

Figure 2 is a plan view.

Fig. 3 is a sectional View along the line A-A of Fig. 1.

Figs. 4 and 5 are detailed views of various component members of the apparatus.

Fig. 6 is a diagrammatic section of a modification of the device illustrated in Figs. 1 to 5.

The glass cutter (Figs. 1 to 5) is formed by a frame I in the interior of which a housing 2 is provided to take the tool holder 3 as well as the slidingmember 4 arranged above the tool holder and divided from it by spring 5 of which the compression may be adjusted at will by the working of the screw 6; in practice the adjustment of the spring 5 should be so regulated that, when the screw B is at the middle of its travel, the force applied on the tool holder may be 4 kilos in the case of a cutting-wheel holder and 1 kilo in the case of a diamond.

In the method of execution illustrated in Figs. 1 to 4 the cutting tool is formed by a cutting wheel 1; a set of cutting wheels 1 may be arranged satisfactorily on a common ring 8, that can be fastened in various positions depending on which of these cutting-wheels is put into service.

The tool holder 3 besides is interchangeable and Fig. 5 shows a tool holder 3a, furnished with 2 a diamond 9 lthat vcan be interchangedfwith the tool holder 3.

The frame I comprises on the other hand-a housing for a kerosene or .the like tank I0, lled with cotton and opening at itslowerend through a set of ,openings VI 4 by means Vof' which astrip .of felt I2 can be kept saturated with keroseneythe felt during thecutting `operation may slideincontacting 4relationship with theglass surface and thus coats this surface 4with a thin filmo kerosene and this ensures -an vunrivalled degreeof smoothness in the cutting operation and saves the cutting-wheel or diamond from undue wear and tear.

Fig. 4 shows the holder for the feltformed by plate I3 perforated with holes II to .allow the kerosene to pass, with side. holes -I5 through which the thread used for fastening thefelt canpass, with holes I1 for screws IIBby means of AVwhichthe plate I3 is fitted to the frame ofthe apparatus and finally with a 'large lopening I9 forming a passage for the tool holder.

The frame I is furnished witha cover :20- secured by a hinge. at 2| andkept in position by screw 22. y

The notches 23, cut in the lower .part of .the frame act inthe standard wayas crumbling-irons for breaking off .the cut glass. after the tool has made a groove.

The apparatus comprises-.finally 4a vmeans of lining up that allows a speedy production in making longitudinal cuts, by making unnecessarythe use of a rule that is hard to keep in position when it comes to cuts of great length.

The lining up is effected in accordance'with the invention by means of two guidelines 24 that are tted to the frame I, optionally on one sideor vthe other of the frame to suit the convenience ofthe operator, by means of the screw 25 locked by the nut 26. The horizontal arm of each guide-line is notched at regular distances, vfor instance. at equal divisions every 5 mm., as marked out on a scale 21 and a traveller I28 can move along this arm and may be clamped by meansof a screw 29 opposite the particular scale mark selected; the traveller 28 carries on its bottom sidea bearing roller .30, of which the distance d to the vertical plane going through the cutting-line of the` tool is thus always equal to that shown by the division number on the scale opposite which the screwfhas been clamped.

The methodof executiondescribedV above and illustrated in Figures 1 to 5 of the accompanying drawings is intended moreespecially for use `with glass dealers, retailers and yprivate persons; as shown more particularly in Figure 2 it includes two guide lines 24.

Figure 6 illustrates in a Vmore .diagrammatic way a simpler form of execution intended for the use of tradesmen ysuch as professional glasscutters, house painters and: glaziers.

In view of the fact that the apparatus is intended, in this form of execution, for employment by skilled glass-cutters, it includes only one guide-line 24, that allows, as the drawing shows, a shorter length of guide line, while the capacity of the kerosene tank is kept up to the desired value by increasing the height of the tank. The parts of the apparatus denoted by the same reference numbers are the same as those shown in the form of execution illustrated in Figures 1 to 5.

In practice, the apparatus will be made of rustproof parts with the sliding members of softer metal than the enclosing frame.

Having now particularly described and ascertained the nature of my invention and in what manner the same is to be executed, I declare that what I claim iS:

1. A glass cutting device comprising a portable frame, a removable flexible glass cutter housed in said frame and composed of a sheath inside which a tool carrier provided with a cutting wheel at its lower part and a sliding member at its upper part are slidably mounted, a spring interposed between the tool carrier and the sliding member, an adjustable screw secured to the upper part of the sheath by means of which the pres-- sure of the spring may be adjusted as desired, a tank lined with cotton provided inside said frame, said cotton being impregnated with a lubricating liquid, a plane elted base having a large surface area lying in the same horizontal plane as the bottom of the cutter and extending under the entire bottom of the tank and under the tool carrier, whereby the frame is adapted to bear on the surface of the glass to be cut and to maintain the glass-cutter in a substantially vertical position in any plane and a plurality of ports provided at the bottom of the tank allowing the lubricating liquid to flow continuously from said tank through said ports over the felted base.

2. A glass cutting device comprising a portable frame, a removable flexible glass cutter housed in said frame and composed of a sheath inside which a tool carrier provided with a diamond at its lower part and a sliding member at itsupper part are slidably mounted, a spring interposed between the tool carrier and the sliding member,

an adjustable screw secured to the upper part of the sheath by means of which the pressure of the spring may be adjusted as desired, a tank lined with cotton provided inside said frame, said cotton being impregnated with a lubricating liquid, a plane felted base lying in the same horizontal plane as the bottom of the cutter and having a large surface area and extending under the entire bottom of the tank and under the tool carrier whereby the frame is adapted to bear on the surface of the glass to be cut and to maintain the glass-cutter in a substantially vertical position in any plane and a plurality of ports provided at the bottom of the tank allowing the lubricating liquid to ow continuously from said tank through said portsI over the felted base.

3. A glass cutting device comprising a portable frame, a removable flexible glass-cutter housed in said frame and composed of a sheath inside which a tool carrier provided with a steel cutting wheel at its lower part and a sliding member at its upper part are slidably mounted, a spring interposed between tne tool carrier and the sliding member, an adjustable screw secured to the upper part of the sheath by means of which the pressure of the spring may be adjusted as desired, a tank lined with cotton provided inside said frame, said cotton being impregnated with a lubricating liquid, a plane felted base lying in the same horizontal plane as the bottom of the cutter and having a large surface area and extending under the entire bottom of the tank and under the tool carrier whereby the frame is adapted to bear on the surface of the glass to be cut and to maintain the glass cutter in a substantially vertical position in any plane and a plurality of ports provided at the bottom of the tank allowing the lubricating liquid to now continuously from said tank through said ports over the felted base, at least one frame guiding member, means for securing it optionally to either side of the frame, a slider slidably mounted on said guiding member provided with a series of notches at equal distances marked out along a scale, a guiding abutment protruding on the lower part of said slider and clamping means for securing the slider on the frame guiding member so as to allow the distance between the guiding abutment and the working plane of the cutting tool to be adjusted by sliding the slider step by step perpendicularly to the cutting line.

4. A glass cutting device comprising a portable frame, a removable exible glass-cutter housed in said frame and composed of a sheath inside which a tool carrier provided with a diamond at its lower part and a sliding member at its upper part are slidably mounted, a spring interposed between the tool carrier and the sliding member, an adjustable screw secured to the upper part of the sheath by means of which the pressure of the spring may be adjusted as desired, a tank lined with cotton provided inside said frame, said cotton being impregnated with a lubricating liquid, a plane felted base lying in the same horizontal plane as the bottom of the cutter and having a large surface area and extending under the entire bottom of the tank and under the tool carrier whereby the frame is adapted to bear on the surface of the glass to be cut and to maintain the glass cutter in a substantially vertical position in any plane and a plurality of ports provided at the bottom of the tank allowing the lubricating liquid to ilow continuously from said tank through said ports over the felted base, at least one frame guiding member, means for securing it optionally to either side of the frame, a slider slidably mounted on said guiding member provided with a series of notches at equal distances marked out along a scale, a guiding abutment protruding on the lower part of said slider and clamping means for securing the slider on the frame guiding momber so as to allow the distance between the guiding abutment and the working plane of thc cutting tool to be adjusted by sliding the slider step by step perpendicularly to the cutting line. MARCEL ADOLPHE JOSEPH LOUIS GAULT.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 308,709 Sinsz Dec. 2, 1884 557,200 Godell Mar. 3l, 1896 1,606,802 Kurtz et al Nov. 16, 1926 1,750,913 Vollm Mar. 18, 1930 FOREIGN PATENTS Number Country Date 79,682 Sweden Dec. 23, 1932 

